[General] - Volume sliders that are not manually being updated by the user have a rough animation.

[ZereoX]

Your system information

• Steam client version (build number or date): 1731433018 (Stable) / 1731990050 (Beta)
• Distribution (e.g. Ubuntu): SteamOS 3.6.20 / 3.7.0 (Deck) and Manjaro w/ Gnome 46 (Desktop)
• Opted into Steam client beta?: Yes. Issue is present on both Stable and Beta
• Have you checked for system updates?: Yes
• Steam Logs: steam-logs.tar.gz
• GPU: AMD Van Gogh RDNA 2.0 (Steam Deck) and RX 7800XT (Desktop)

Please describe your issue in as much detail as possible:

When adjusting the volume, the various sliders within Steam can be seen with a very jagged animation. The slider animation appears to rubberband between their current and previous volume which results in perceived jitteriness of the slider volume. This is especially noticeable when adjusting volume via the touchscreen instead of the Gamepad or Volume Keys.

Video

https://github.com/user-attachments/assets/85f032aa-7090-4451-b952-643269aae5e0

Steps for reproducing this issue:

1. Open the Quick-Access Menu via the ... button.
2. Use your finger to adjust the output volume slider.

Reproduction Rate: 5/5

Affected Platforms

• LCD / Jupiter: Yes
• OLED / Galileo: Yes
• Desktop Deck-like session (gamescope -e -- steam -gamepadui -steamdeck): Yes
• Desktop: Yes, in Big Picture Mode

Actual result

• Volume sliders have a jittery animation when updated by Steam.

Expected result

• Volume slider animations are smooth when updated by Steam.